Alloy



Patented Get. 17, 1922.

UNHTED STATES @FFHCZE.

FOSTER MILLIKEN, F LAWRENCE, NEW YORK.

ALLOY.

No Drawing.

To all whom it may concern:

Be it known that I, FOSTER MILLIKEN, a'

rolled, drawn, forged or Worked in other ways while being cold to form rods, wires, tubing and the like.

The alloy contains the following metals in substantially the following proportions, l5 namely:

Copper 6070 per cent. Nickel 9 12 per cent. Zinc 1924 per cent. Iron 12} per cent.

20 Trace of manganese.

These metals are melted together and the resultant alloy is adapted for cold Working and has the additional advantage of being acid resisting. It is understood that the iron used is not alloyed with any other element before combining it with the other ingredients.

The addition of the manganese toughens the alloy and not only changes the physical characteristics, that is, its tensile strength, its elastic limit, its elongation and reduc- Application filed October 8, 1919. Serial No. 329,185.

tion of area, but has a decided effect on the chemical resisting qualities of the alloy.

Tests of the new alloy have produced the following results:

Rods.

Unannealed. Annealed.

.. Tensile strength 121. 200 91. 200 Elastic limit 112.600 63. 800 Elongation 8.6% 32. 6% Reduction in area 10. 2% 54. 5%

Wire. I 4 5 Tensile strength 162. 800 Reduction in area 48. 2%

This alloy differs from the one described in the Letters Patent of the United States, No. 1,314,417, granted to me on August 26, 1919, in that it has a high percentage of copper, a lower percentage of zinc, and but a trace of manganese.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 2- An alloy consisting of the following ingredients in substantially the following proportions: copper to per cent, nickel 9 60 to 12 per cent, zinc 19 to 24 per cent, iron 1 to 2% per cent, and a trace of manganese.

FOSTER MILLIKEN. 

